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Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios i
From: |
Edgar E. Iglesias |
Subject: |
Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image |
Date: |
Sun, 7 Apr 2013 02:52:08 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Sat, Apr 06, 2013 at 10:12:49PM +0200, Alexander Graf wrote:
>
> On 06.04.2013, at 22:07, Edgar E. Iglesias wrote:
>
> > On Sat, Apr 06, 2013 at 01:38:52PM +0200, Alexander Graf wrote:
> >>
> >> On 06.04.2013, at 13:27, Peter Maydell wrote:
> >>
> >>> On 6 April 2013 10:07, Alexander Graf <address@hidden> wrote:
> >>>> On ARM, look at highbank. Because we're not running we're lacking
> >>>> a monitor mode blob that provides sys calls for flushing caches.
> >>>> Thus today the highbank machine doesn't boot anymore with Linux.
> >>>> If we ran firmware like the real board, that would provide for the
> >>>> sys call.
> >>>
> >>> We also flat out don't implement enough monitor mode to allow
> >>> a hypothetical firmware blob to work.
> >>
> >> Why don't we implement enough monitor mode? Because we're not running
> >> firmware :). It's a chicken and egg thing. Bottom line is that Linux
> >> validly expects that firmware exists. If we don't run firmware, we
> >> diverge, thus we potentially break.
> >
> >
> > Hi guys, A question - For linux kernels that depend on preivous stages to
> > setup
> > HW state. What is the prefered way to handle it?
> >
> > In particular, if the boot loader chain depends on for example a boot rom
> > that is not Open Source. Is providing a QEMU specific loader in pc-bios/ a
> > good
> > option?
>
> That's pretty much what we do for all PPC machines that do execute firmware,
> yes :). Just make sure to license your own firmware code under an open source
> license.
OK, got it, thanks Alex.
Cheers,
Edgar
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, (continued)
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Alexander Graf, 2013/04/06
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Peter Maydell, 2013/04/06
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Alexander Graf, 2013/04/06
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Peter Maydell, 2013/04/06
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Edgar E. Iglesias, 2013/04/06
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Alexander Graf, 2013/04/06
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image,
Edgar E. Iglesias <=
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Peter Maydell, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Fabien Chouteau, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Peter Maydell, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Artyom Tarasenko, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Peter Maydell, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Alexander Graf, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Peter Maydell, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Alexander Graf, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Peter Maydell, 2013/04/04
- Re: [Qemu-ppc] [Qemu-devel] [PATCH 3/3] PPC PReP: can run without bios image, Alexander Graf, 2013/04/04